Pump-valve.



'a citizen ot' the WILLIAM T. BIRCH, or cHIcAGo, Immers PUMP-VALVE.

' Specilcation of Letters Patent. Continuation of application Serial No.706,253, filed .Tune 27,

'Patented' Mar. 17,1914. 1912. vThis appleationled January 30,

ma. senta No. 745,083.

v To all cch'om it muy' concern..."

Be it known that I, WILLIAM T.'BI RGH, Unitedl States, residing atChicago, in the of Illinois, Vhave invented certain new and usetulvImprovements in Pump-Valves, of which the following is a specification.

My invention relates to provide a valve lstructure which shall have thecombined advantages of few parts,

simplicity, and cheapness of construction of,

said parts, ladvantageous cooperation between said suitably constructedparts', and

' made more other practical. advantages hereafter to be clearlyapparent.

Another object of my invention is to provide a double face walve so thatwhen face\ becomes inefficient by wear it can be turned over and thereversed face used.

In. this application I have illustrated and described aparticular formof double face 'reversiblejvalve which is inade the subject matter4 oithe claims -in a divisional appli- 'cation'filed by me February 7th,1914, and

serially numbered 817,157, the application being entitled Pump valves.

Other and further objects of invention will become readily apparent-to-thos'e skilled in the art from a consideration of the followingvdescription 'of an embodiment thereof taken in conjunction with theaccompanying-drawing, wherein- Figure 1 is a vertical central sectionthrough a valve constructed in accordance section taken on line l.Q -2of Fig. 1; Fig. 3 is'a central vertical section of a modified form of myinvention; Fig.' 4 is an enlarged fragmentary sectionof parts of thestructure shown in Fig. 1` and of the rings and body part beforeassembling; Fig. 5 is a similar section showing the rings in their finalpositions and showing, in dotted lines, the annular integral ribs afterthey lhave been deflected from their initial positions into their finalpositions by being rolled over into engagement with the vulcanized orsemi-vulcanized rings that afford the packing face of the valve. l

In all views, the same reference characv ters indicate similar parts.

ing of brass, having integral ring-engagingv means upon meer both of itssides tosecure countyv of Cook and Stat-e be reversed and the rings onthe to improvements 1n pump valves and has for its general object' withmy invention; Fig. 2 is a transverse Fig. 5 shows the Yciation with theface of the valveseat 11.

In Fig. 1, I have shown the valve constructed with packing rings on eachofits side faces-so that after one set of rings have become defective bywear the valve .may opposite side may then be used, while in Fig. 3 thevalve isconstructed to carry rings only orx one side or` face. part iscentrally perforated, as at 12. to receive the stem 13`which is anintegral part whichextends from the hub 11 ofthe valve seat 11 of theusual type. The bodyT part 10pt the valve has extending laterally7thereof, and concentricwith the said central perforation, a series ofconcentric ribs 14. 15, 16. and 17, providing therebetween somewhatwider than' the width of the packing rings, to be carried by the body,at the seat-engaging portions of said rings.

The packing ring 19 is preferably com? posed of vulcanized, or

semi vulcanized,

rubber and is to be contained in the groove'.

18between the ribs 14 and 15. The seating surface ofthe ring, thatportion ycontained between the vertical edges V2() and 2l, is somewhatnarrower than the base portion '22, this base portion of. the ring beingtapered to the vertical 'edge 21, itbeing sub stantially as wide as thegroove 18.

v Fig. 4 shows the relativelocation of the parts of the double-facevalve `before the' rings arel placed in the grooves 18-1"8 and locationofthe parts after the rings have been placed in the grooves and beforethe ribs 15 and 16 havebeen radially defiected into' contact with theinclined portions 22 of the rings. For packing the stem 13, I provide asimilar but smaller packing ring 19 adapted to be'contained in thegroove 18"' provided. by the ribs 16 and 17. For the purpose ofconvenient construction the wider base .portion of this ring extendsradially and outwardli7 from its vertical' edges. Both of these pack`ing rings are made in the form substantially `shown and` vulcanizedprevious to placing them in the ring carryingportion ot the valve body.

After the rings have vbeen placed in their proper grooves, as shown inFig. 5,` the laterally extending annular ribs 15 and 16, are radiallydeflected, as shown in dotted lmes in Fig. 5, by a process of rolling ors p1 nm'ng `quie y'than a single screw' could be inserted causing theribs to tightly engage the enlarged tapered surfaces of' the respectiverings and to securely h'old them in their proper jpositions- -in thevbodypart of the f valvewithout imposing any strain upon the .bodypa'rtof the valve tending to cause disl tortion thereof and causing theseating faces -of the rings to be displaced .from their norv `jmalhorizontal'plane. It will thus be seen i that each of the packing ringsis 'independ entlyv held in placelby an integral part of the valvebody.' 'This construction has considerable advantage overy priorstructures wherein-extraneous parts requiring screws,

or the like, are employed to hold'the rings in place as sucharrangements are liable to disintegration and to become loosened anddisplaced by use. The flanges 15 and 16 may dily .rolled in place forholding the Aring in their proper positions much more .inthe body art,and when-these flanges have been de ected into their proper positions,for purposes' described, they'are there for all time and intimatelysecure 4and hold -the rings in their places without possibility .ofdisengagement. j When the double-face valve isemployed, as shownin Fig.1, the deflected rib 16, that thev valve, provides a convenient taperingguide for the valve-closing spring 23. The

, .upper end of the spring 28 engages under thecurled-over edge 2-1ofthecup' 25 which is secured by screw-threaded engagement to the upperend of the stem and by means of the nut 26. The spring Q3 acts in theusual fashion to return the valve toits seat and lyieldingly to permitthe opening of "the 4,0 valve. The idle packing ring 19 will cushu ionthe .blow against the head 25' when the 'valve body is moved toitsextreme extent. In the structure shown in Fig. 3, I pref- 1 erablylprovide, on the upper surface, a rib 45. o1' fiange 27 to guide thelower end of the 'springin'a similar manner. i

'Some'of the advantages of my device over prior-structures will becomereadily appar- .ent to persons skilled in the art from the foregoingdescription.y The integral means of intimately securing the packing ringat everyvpoint; along-and adjacent to its circumferential surface,after'the ring has been in-l -serted is of greatv structural andoperative value. It is further clearly advantageous for theireasonthere'is no strain' imposed upon the body partofth'epacking-ring-carrying'body to cause it to become Warped or distorted;therefore, the contacting faces of the outer and inner packing ringswill remain always in the same horizontal plane.

What I claimis: I y

A1. vIn a deviceof the character described, Y, i

vmay, at the time, be on thel top'surfaces ofy income a ring-carryingvalve-body part having-"a plurality of laterally projecting, integral,concentric ribs on its face to rovide therebetween aseat for a packingring; a packing ringseated between said ribs, a portion of one of saidribs being rolled overafter the insertion of said ring to retain saidring in place.

2. In a device of the character described, a ring-carrying valve-bodypart having a plurality of' laterally projecting, integral, concentricribs on its face to provide therebetween a seat for a. packing ring;apacking ring having its base'wider than its face, seated between saidgribs; a portion of the rib nearest the extended port-ion of said ringbeing rolled over, after the insertion of said ring, to overlie saidextended portion thereof to retain the ring in place.

3. In a device of the character described, a ring-'carrying body havingextending from.` its'side'fa'ce two concentric parallel ribs integralwithA said body, and a packing ring. having a verticaledge for reactionwith one of said ribs and an outwardlyiinclined edge, the other ribbeing rolled down over said 'inclined'edge, of the ring after theinsertion of said packing ring. i

4F. In a device of the character described, the combination with avvulcanized packing ring having an inclined edge, ofa valve body havingconcentric ribs spaced apart a distance substantially equal to thegreatest width of said ring, a portion of one of said ribs being rolledover said inclined edge ofthe ring after the insertion vof said ring,whereby, in the rolling process, said ring is 109 'secured between saiddeflected and undelflected rib. v In a device of the characterdescribed, a valve body having a central stem-receiving aperture, andhaving integral, laterally eX'- 105 tending, concentric pairs of ribsadjacent said perforation in the body and `adjacent the periphery of thebody, respectively; the ribs of each said pair being spacedto pro i videa ring-..receiving groove therebetween; 110 and tapering valve rings,each having ai base of substantially the 'width of the. roove, seatedbetween each pair of vertica ly 'ein tending ribs, one edge of eachringbeing v inclined away'from the adjacent rib, and a 115 portion ofsaid rib being rolled or otherwise defiected'over said inclined edge, tohold the ring in place 'after the-rings have been in*- serted in saidgrooves.

In testimony whereof II hereunto set my l hand in the presence of twowitnesses.

' WILLIAM fr.- Bison- #JOHN M. Lan,

FLossmfSivnwnon.

